Step 2: Make a plan. Let’s underline important words in our restatement of the problem in Step 1. Then, draw a picture to show what is happening in the problem. 3 Amount remaining 7 ft 8 Cut off 2 ft Plan: Subtract 2 3 from 7 8 . Step 3: Solve the problem. 7 8 2 3 21 24 16 24 Rewrite each fraction with the LCD. 5 24 Subtract. Step 4: State the answer in a complete sentence. The amount of wire remaining is 5 24 ft. Step 5: Check the answer. Amount of wire Amount of wire Total length cut off remaining of wire 2 3 5 24 The total length of the wire is 7 8 ft. The answer is correct. YOU TRY 8 A carpenter has a piece of window trim that is 11 12 16 24 5 24 21 24 7 8 yd long. He cuts off a piece that is 3 4 yd long. How much window trim remains? We can read information from a chart to solve problems. At an urban elementary school, many students come from homes where English is not the primary language. The pie chart shows the fractions of the 576 students who speak a given language at home. a) What is the fraction of students who speak English or Chinese at home? b) How many students speak English or Chinese at home? c) For what fraction of the students is English not the primary language at home? d) How many students speak a language other than English at home? EXAMPLE 9 Language Spoken at Home as a Fraction of the Student Body 1 36 Other 3 8 English 1 4 1 9 Urdu Spanish 1 9 Arabic 1 8 Chinese Recognize that all the pieces add up to 1 in this type of chart. www.mhhe.com/messersmith SECTION 4.4 Adding and Subtracting Unlike Fractions 251
messersmith_power_basic_college_1e_ch4_7_10
To see the actual publication please follow the link above